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