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