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