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