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