One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,10,7,4)(5,8)(6,9)(11,15,13,12)(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)(1,3,6,7)(2,4,9,10)(5,13,14,11)(8,15,16,12)(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)(2,7)(3,9)(5,12)(6,10)(8,13)(11,16)(14,15)(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) involution — undirected(1,5,6,14)(2,8,9,16)(3,11,7,13)(4,12,10,15)(18,26)(24,38)(25,40)(27,28)(29,39)(37,48)(41,42)(43,44)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.