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