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