One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,9)(3,5,11,7)(4,8,12,15)(10,13,16,14)(18,22)(20,28)(23,25)(26,32)(33,34,38,40)(35,36,42,44)(37,39,46,45)(41,43,48,47)(4,12)(8,15)(10,16)(13,14)(17,18)(19,25)(20,24)(21,22)(23,27)(26,31)(28,29)(30,32)(33,35)(34,36)(37,41)(38,42)(39,43)(40,44)(45,47)(46,48) involution — undirected(1,3,6,11)(2,7,9,5)(4,10,12,16)(8,14,15,13)(17,18,21,22)(19,23,27,25)(20,24,28,29)(26,30,32,31)(33,36,38,44)(34,35,40,42)(37,43,46,47)(39,41,45,48)(1,3)(2,5)(4,10)(6,11)(7,9)(8,13)(12,16)(14,15)(17,18)(19,23)(20,24)(21,22)(25,27)(26,30)(28,29)(31,32)(33,36)(34,35)(37,43)(38,44)(39,41)(40,42)(45,48)(46,47) involution — undirected(1,4,6,12)(2,8,9,15)(3,10,11,16)(5,13,7,14)(17,19,21,27)(18,23,22,25)(20,26,28,32)(24,30,29,31)(33,37,38,46)(34,39,40,45)(35,41,42,48)(36,43,44,47)(1,5)(2,3)(4,13)(6,7)(8,10)(9,11)(12,14)(15,16)(17,20,21,28)(18,24,22,29)(19,26,27,32)(23,30,25,31)(33,34)(35,36)(37,45)(38,40)(39,46)(41,47)(42,44)(43,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.