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