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