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