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