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