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