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