One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,9)(4,10)(5,8)(6,7)(11,16)(12,13)(14,15)(18,22)(23,29)(24,27)(30,32)(33,34,39,38)(35,40,45,44)(36,46,47,41)(37,42,43,48)(2,7)(3,10)(8,15)(11,13)(17,18)(19,23)(20,24)(21,22)(25,29)(26,30)(27,28)(31,32)(33,35,39,45)(34,40,38,44)(36,37,47,43)(41,48,46,42)(2,7)(4,9)(8,15)(12,16)(19,25)(23,29)(26,31)(30,32)(33,36,39,47)(34,41,38,46)(35,43,45,37)(40,42,44,48)(1,3)(2,4)(5,13)(6,10)(7,9)(8,16)(11,14)(12,15)(17,18)(19,23)(20,27)(21,22)(24,28)(25,29)(26,32)(30,31)(33,37)(34,42)(35,36)(38,48)(39,43)(40,46)(41,44)(45,47) involution — undirected(1,4)(2,3)(5,12)(6,9)(7,10)(8,11)(13,15)(14,16)(17,19)(18,23)(20,26)(21,25)(22,29)(24,30)(27,32)(28,31)(33,36)(34,41)(35,37)(38,46)(39,47)(40,48)(42,44)(43,45) involution — undirected(1,5)(2,8)(3,11)(4,12)(6,14)(7,15)(9,16)(10,13)(17,20,21,28)(18,24,22,27)(19,26,25,31)(23,30,29,32)(33,38,39,34)(35,44,45,40)(36,46,47,41)(37,42,43,48)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.