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