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