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