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